Abstract: A profiled cylinder for teaseling and/or fluffing machines of the type having a generally cylindrical outer peripheral surface and provided at its ends with support hubs for its rotation, in which the radially outer peripheral surface has a particular profile caused by a plurality of variously arranged geometrical forms or surface portions disposed for abraiding contact with a fabric which is to be treated by passage through the machine.

Abstract: An apparatus for shearing, tigering, napping or other surface treatment of a finite length of a textile fabric, particularly pile and plush fabrics, is disclosed which is especially adapted for experimental research and development usage in a laboratory setting. The apparatus includes a rotatably driven roller having a fabric surface-engaging periphery and an arm assembly for supporting the fabric piece for presentation to the roller, the arm assembly being movable between a fabric-loading position spaced from the roller and a treatment position in close adjacency to the roller.

Abstract: A process and apparatus for the production of nitrogen from air by the cryogenic fractionation of the air at superatmospheric pressure and which permits the production of variable quantities of nitrogen from a constant supply of air at superatmospheric pressure by periodically distilling less than all of the air which is supplied at superatmospheric pressure and work expanding a stream of air at superatmospheric pressure provided from the balance of said supply whereby to produce additional refrigeration for the process, and recovering condensed nitrogen vapor thereby formed in excess of that required for reflux.

Abstract: A process is provided for mechanically surface-finishing a textile fabric which comprises continuously feeding said fabric from a source of supply, such that said fabric lies in a single plane, subjecting successive adjacent sections of the fabric to intermittent mechanical impact with an abrasive means across the width of said fabric thereby avoiding substantial sustained contact between the fabric and the abrasive means, the mechanical impact being at a force and frequency sufficient to cause a substantially uniform modification of the surface characteristics of the fabric. Textile fabrics with modified surface which may be made by the above process are also provided. Apparatus for mechanically surface-finishing a textile fabric according to the aforedescribed process is further provided.

Abstract: A process is provided for mechanically surface-finishing a textile fabric which comprises continuously feeding said fabric from a source of supply, such that said fabric lies in a single plane, subjecting successive adjacent sections of the fabric to intermittent mechanical impact with an abrasive means across the width of said fabric thereby avoiding substantial sustained contact between the fabric and the abrasive means, the mechanical impact being at a force and frequency sufficient to cause a substantially uniform modification of the surface characteristics of the fabric. Textile fabrics with modified surface which may be made by the above process are also provided. Apparatus for mechanically surface-finishing a textile fabric according to the aforedescribed process is further provided.

Abstract: An open frame structure has spring fingers for lightly gripping a tennis ball. A shaft rotatably mounts a napping wheel in the open frame structure, the periphery of the napping wheel having bristles except for a given circumferential section. Also secured to the shaft is a radially extending arm terminating in a friction pad to one side of the napping wheel and positioned to engage the tennis ball when gripped in the spring fingers. The arrangement is such that rotation of the napping wheel causes the bristles to successively engage the tennis ball to rotate the same about an axis parallel to the axis of the napping wheel shaft. Once each rotation, the friction pad on the radially extending arm will engage a side portion of the tennis ball and rotate it slightly about a different axis so that the bristles will engage a different circumferential path portion about the ball resulting in substantially the entire area of the ball being napped after several rotations.

Abstract: Tightly woven colored fabrics such as twills, denims, sateens, and poplins are provided with pattern areas thereon simulating the appearance of a printed design and wherein the pattern areas are of a color tone contrasting with the color of adjacent pattern areas and have a discernible softer texture imparting further contrast with the non-pattern areas. The contrasting tone colored pattern areas may either have a lighter color tone appearance than the non-pattern areas or a darker color tone appearance or the pattern areas may appear to change in color tone with respect to the background areas when the fabric is viewed at different angles.

Abstract: A fabric is superficially dyed by stamping and then subjected to abrasion to produce a feltlike appearance and a simultaneous mutation in coloring.